Research Article
Natural Transformation of Zinc Oxide Nanoparticles and Their Cytotoxicity and Mutagenicity
Table 1
Particle size and zinc concentration of pristine and alkalized NPs suspension.
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Nanoparticle size was expressed as intensity-based average hydrodynamic diameter. Bars: ±SD. The dissolved Zn concentration was measured by ICP-OES: 50 mg/mL NPs was suspended in Milli-Q water at 25°C. After high-speed centrifugation (20,000 rpm for 30 min with cooling) and membrane filtration (Whatman alumina Anotop membrane, 0.02 μm pore size, 47 mm diameter), the concentration of elemental Zn (206.200 nm) in the supernatants was measured using ICP-OES. |